Digging out from snowpocalyse: Travel chaos on the East Coast as Hercules grounds 4,000 flights and makes roads unusable after dumping 22 inches of snow

New York, D.C. and Boston are being hit by up to 22 inches of snow First departure left JFK at lunchtime on Friday after hundreds of cancellations at New York's main airport 4,000 flights canceled on Thursday and Friday across the U.S. Warnings plummeting temperatures and wind chills below zero could freeze exposed skin within 15 minutes Man died outside Philadelphia when 100ft pile of salt fell on him as he prepared it for gritters 'Ready for whatever hits us': New NYC Mayor Bill de Blasio remained confident in first test since taking office Outreach teams looked to get homeless people off the frigid streets of New York City and Boston